Investigation of the unsteady surface pressure field under a Mach 2 compression-ramp shock/boundary-layer interaction

Investigation of the unsteady surface pressure field under a Mach 2 compression-ramp shock/boundary-layer interaction

The shock/boundary-layer interaction induced by a 20° compression ramp in a Mach 2 flow was investigated using fast pressure-sensitive paint with a bandwidth of about 10 kHz. The mean separated flow length-scale is about two upstream boundary layer thicknesses, which indicates the interaction is wea...

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Veröffentlicht in:Physics of fluids (1994) 2024-09, Vol.36 (9)
Hauptverfasser: Musta, Mustafa N., Clemens, Noel T.
Format: Artikel
Sprache:eng
Schlagworte:
Boundary layer interaction
Coherence
Cross correlation
Flow separation
Investigations
Low frequencies
Pressure
Pressure-sensitive paints
Separation
Thickness
Time domain analysis
Upstream
Wind tunnels
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Zusammenfassung:The shock/boundary-layer interaction induced by a 20° compression ramp in a Mach 2 flow was investigated using fast pressure-sensitive paint with a bandwidth of about 10 kHz. The mean separated flow length-scale is about two upstream boundary layer thicknesses, which indicates the interaction is weak. The primary analysis consists of cross-correlations, coherence, and time-domain filtering. Two different frequency bands were investigated: low-frequency (f 
ISSN:1070-6631
1089-7666
DOI:10.1063/5.0221977